We got our Aussie Patches, as a rescue from our humane society. Ironically, the reason the people gave for dropping him off there was that he was herding the chickens (after they had him herding their other livestock) and was killing the young ones, either by scaring them to death or nipping them. We got him over two years ago and just last spring got our first chickens. We were VERY cautious about letting him be anywhere near the birds at first. I was especially overprotective of my feathered babies. Instinctually, Patches AND our Doberman Finn wanted to chase them, but we would tell them no and then hold a chicken and love them with the dogs nearby, so they could tell that we treated the chickens the same way we treat them, with love. Eventually, both our boys caught on. Now, our last surviving hen Dixie comes into the house almost once a day to get treats and extra love and the boys leave her alone in here and outside when she's free ranging. Although our boys are really well behaved with our birds, I know that sometimes instinct just takes over. Especially when no one is there to supervise. So, when we are not home and the dogs are in the yard, the birds are in either the run or the coop. We have never had a predator problem near our yard and I don't know if that's because of the dogs' scent, or just because my boys are such good guard dogs...of their human AND feathered family.